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Question

Spike potential of nerve fibre is
  1. +40 mV
  2. - 80 mV
  3. +20 mV
  4. - 60mV

A
+20 mV
B
+40 mV
C
- 80 mV
D
- 60mV
Solution
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Spike potentials are one of the action potential, which occur in electrical activity of smooth muscle contraction in animals. These are true action potential. Spike potential of nerve fiber is +40 mV.
So, option A is the correct option.

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